1/8" FV4 Auto Air Vent Zoom
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1/8" FV4 Auto Air Vent

SKU:0590715

Brand: Watts

Watts
Qty Price
$5.39
/ each
$51.90 / box (10 units x $5.19)
Out of StockAllow 7-10 Days to Ship Out
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Resources

Specs

Size: 1/8"
System Type: Hydronic (Water)
Max Temp (F): 240°F
Min Temp (F): 33°F
Temperature Range (F): 33°-240°F
Max Pressure: 150 psi
Min Pressure (PSI): 1.45 psi
Material: Brass
Mount: Straight
Adjustability: Non-Adjustable
Thread Type: Male
Thread Size: 1/8"

Description for Watts 0590715

Watts Series FV-4 Automatic Vent Valves are used in commercial and residential hydronic heating applications to provide automatic air venting for hot or cold water distribution systems. It consists of a brass body construction with female NPT connection, brass cover, air vent with silicone rubber seal, polyethylene float with valve plug, and automatic vent. Series FV-4M1 has a high temperature rating and is ideal for use with glycol systems or for use as an anti-vacuum device. It can also be installed to permit the separation and dispersal of air while fluid is circulating in the system. Can be disassembled for inspection and cleaning.

Features:

  • Body and cover are brass construction
  • Air vent with silicone rubber seal
  • Impurities do not usually affect function as maximum float line of water is always lower than the valve seal
  • Float is high temperature resistant polyethylene
  • Suitable for use with glycol systems
  • Can be disassembled for inspection and cleaning

1/8" FV4 Auto Air Vent

REVIEW SNAPSHOT®

by PowerReviews
Watts1/8" FV4 Auto Air Vent
 
4.8

(based on 11 reviews)

Ratings Distribution

  • 5 Stars

     

    (9)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Reviewed by 11 customers

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(1 of 1 customers found this review helpful)

 
5.0

Awesome product

By Jake

from Leechburg, PA

Verified Buyer

Comments about Watts 1/8" FV4 Auto Air Vent:

These air vents are terrific. I have hot water base board heat and they are small enough to fit where the original manual air vents were. These air vents remove the air quickly and quiet the system down greatly. Never have to maually bleed these anymore and get water everywhere. Plus THEY DO NOT DRIP!!!! Thanks PexSupply!

 
5.0

No MORE AIR IN PIPES!

By HONEST Abe

from EAST NEWARK N.J.

Verified Buyer

Comments about Watts 1/8" FV4 Auto Air Vent:

I BOUGHT 2 OF THESE,THEY WORKED GREAT.ONE APT.WAS COLD EVEN THOUGH BOILER WAS WORKING I CHANGED OUT 1 THAT WAS NOT WORKING PROPERLY. THE NEXT DAY TENANTS SAID HEAT WAS WORKING .THIS TOOK OUT AIR THAT WAS IN SYSTEM AFTER PREVIOSE PUMP REMOVAL.

 
5.0

Perfect for my needs

By Tom H

from Shoreline, WA

Verified Buyer

Comments about Watts 1/8" FV4 Auto Air Vent:

Alowed air to vent from hydronic heating system with no leaking or weeping of water.

 
5.0

Really good price

By Odie

from South Caroina

Verified Buyer

Comments about Watts 1/8" FV4 Auto Air Vent:

These vents are getting hard to find here. Thank goodness I came across it on PEX Supply. It was a great price and easy to order and shipped right to me.

Odie

 
5.0

Product works good

By dbon

from Pgh, PA

Verified Buyer

Comments about Watts 1/8" FV4 Auto Air Vent:

Works good and easy to bleed system

(1 of 1 customers found this review helpful)

 
5.0

Works Great

By Dan, a pipefitter

from NY

Verified Buyer

Comments about Watts 1/8" FV4 Auto Air Vent:

I replaced my old air vent while I was replacing my circulator pump. The old vent was not working very well and the baseboards would gurgle during heating. For the price it just makes sense to replace it while everything is drained down. As soon as I started filling the boiler the new vent relieved the air and my system is now quiet.

 
5.0

Perfect!

By TJ

from Iowa

Verified Buyer

Comments about Watts 1/8" FV4 Auto Air Vent:

Arrived in record time after ordering and was easy to install and works perfectly with our heating system. I can already tell a difference there isn't as much noise in the heating system and it run much more efficient.

 
4.0

Does the job

By Angel_55

from Philadelphia, PA

Verified Buyer

Comments about Watts 1/8" FV4 Auto Air Vent:

This air vent worked well. It replaced an older one. There was a marked difference in the amount of heat I got from the radiator after this new vent was installed. A good product.

 
4.0

Works Well

By Rick

from Hagerstown, MD

Verified Buyer

Comments about Watts 1/8" FV4 Auto Air Vent:

Easy installation in hydronic floor system in my garage. Does exactly what it's supposed to do.

 
5.0

Auto Air Vent Works like a Charm

By Dan

from Dade City,Fl.

Verified Buyer

Comments about Watts 1/8" FV4 Auto Air Vent:

I searched high and low for this vent at a fair price and finally found it at Pexsupply.com.This vent was the last part to go on my solar water heating system.What I like about it is its all brass and will hold up to in the weather.

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2 Questions | 3 Answers
Displaying questions 1-2
  • Q:

    the piece of plastic inside the threaded end.... do I have to remove it prior to installation?,,, I was under the impresion that the pastic insert is for shipping purposes only, to avoid damaging the float.
    Asked on 4/11/2014 by willy from Ottawa. Ontario.Canada

    2 answers

    • VERIFIED BUYER

      A:

      That stays - it's connected to the vacuum breaker.
      http://media.wattswater.com/ES-FV-4M1.pdf

      Answered on 4/12/2014 by Anonymous
    • VERIFIED BUYER

      A:

      My understanding of the paddle is that it should be left in place with the
      installation and that its purpose is to be disturbed by the fluid flow to
      keep the vent From developing an "air-lock" that interferes with the flow of
      bubbles out of the system. I installed all of mine in hydronic heating
      system with the paddles in place and these work fine.

      Answered on 4/11/2014 by Anonymous
  • Q:

    What are its dimensions?
    Asked on 12/2/2011 by Anonymous from Dillon, CO

    1 answer

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